论文标题
拓扑敏感性和信息理论
Topological susceptibility and information theory
论文作者
论文摘要
在本说明中，我们从纯量子信息的角度解决了非亚伯仪理论中$θ$依赖性的问题。主要结果是拓扑敏感性是基态的量子渔民信息，并且可以用物理轴确定$θ$的最大效率量子估计器。在此设置中，轴支的低能动力学由量子估计理论完全确定。
In this note we address the question of the $θ$ dependence in non abelian gauge theories from a pure quantum information point of view. The main result is that the topological susceptibility is the quantum Fisher information of the ground state and that the maximally efficient quantum estimator of $θ$ can be identified with the physical axion. In this setup the low energy dynamics of the axion is fully determined by quantum estimation theory.
